20420302 has 8 divisors (see below), whose sum is σ = 35006256. Its totient is φ = 8751552.

The previous prime is 20420293. The next prime is 20420303. The reversal of 20420302 is 20302402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20420303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729283 + ... + 729310.

It is an arithmetic number, because the mean of its divisors is an integer number (4375782).

Almost surely, 2^20420302 is an apocalyptic number.

20420302 is a deficient number, since it is larger than the sum of its proper divisors (14585954).

20420302 is a wasteful number, since it uses less digits than its factorization.

20420302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458602.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 20420302 is about 4518.8828265402. The cubic root of 20420302 is about 273.3300538307.

Adding to 20420302 its reverse (20302402), we get a palindrome (40722704).

The spelling of 20420302 in words is "twenty million, four hundred twenty thousand, three hundred two".